PNG with Adobe RGB ICC profile color changed after decode-encode round trip

[soyosaki]

Currently, loading a PNG with Adobe RGB ICC profile to DynamicImage then save it unchanged to a PNG causes a golden color becomes more green-ish.

This is a sample input:

And this is the corresponding output:

Expected

The color to be unchanged on display throughout the round trip.

Actual behaviour

Output image should be more green-ish.

Reproduction steps

Suppose the given input image is saved at project root as input.png, run cargo run --release --example convert -- input.png output.png. One should get an image that visually appears like the provided output image.

[soyosaki]

The problem is, many real world color profiles (like Adobe RGB) does not contain CICP. A zipped version of it, copied from my device, is attached below. When passing through src/metadata/moxcms.rs:87 it will skip interpreting color profile and assume an sRGB color profile, causing the color to appear wrong.

AdobeRGB1998.icc.zip